package com.bd.scm.module.qywx.pojo.service;

import com.bd.qq.weixin.mp.aes.AesException;
import com.bd.qq.weixin.mp.aes.WXBizMsgCrypt;
import com.bd.wx.core.util.WeiXinParamesUtil;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * 核心请求处理类
 * @author YH
 *
 */
public class CoreServlet extends HttpServlet {
    private static final long serialVersionUID = 4440739483644821986L;

    /**
     * 确认请求来自微信服务器
     */
    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

            // 微信加密签名
            String msg_signature = request.getParameter("msg_signature");
            // 时间戳
            String timestamp = request.getParameter("timestamp");
            // 随机数
            String nonce = request.getParameter("nonce");
            // 随机字符串
            String echostr = request.getParameter("echostr");

            System.out.println("request=" + request.getRequestURL());

            PrintWriter out = response.getWriter();
            // 通过检验msg_signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败
            String result = null;
            try {
                WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(WeiXinParamesUtil.getProperty("token"), WeiXinParamesUtil.getProperty("encodingAESKey"), WeiXinParamesUtil.getProperty("corpId"));
                result = wxcpt.VerifyURL(msg_signature, timestamp, nonce, echostr);
            } catch (AesException e) {
                e.printStackTrace();
            }
            if (result == null) {
                result = WeiXinParamesUtil.getProperty("token");
            }
            out.print(result);
            out.close();
            out = null;
    }

    /**
     * 处理微信服务器发来的消息
     */
    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.将请求、响应的编码均设置为UTF-8（防止中文乱码）
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");

        //2.调用消息业务类接收消息、处理消息
        QywxMessageService msgsv=new QywxMessageService();
        String respMessage = msgsv.getEncryptRespMessage(request);

        //处理表情
        // String respMessage = CoreService.processRequest_emoj(request);
        //处理图文消息
        //String respMessage = Test_NewsService.processRequest(request);


        //3.响应消息
        PrintWriter out = response.getWriter();
        out.print(respMessage);
        out.close();
    }

}
